The Shimane Prefecture Red Data Book lists about 360 different vascular plant species, including ferns and mosses. Here's what I've seen so far:
The thumbnail images below are arranged alphabetically throughout the pages.

Explanatory notes:  CR+EN：Critically Endangered + Endangered　VU：Vulnerable　NT：Near Threatened　DD: Data Deficient

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Conandron ramondioides / Iwatabako CR+EN	Corylopsis gotoana / Kouyamizuki NT	Cremastra unguiculata / Tokenran VU	Croomia heterosepala / Himenabewari VU
Crotalaria sessiflora / Tanukimame CR+EN	Cyclosorus interruptus / Tetsuhoshida VU	Cymbidium macrohizon / Mayaran CR+EN	Cypripedium japonicum / Kumagaisou CR+EN
Davallia mariesii / Shinobu NT	Dendrobium moniliforme / Sekkoku VU	Dianthus japonicus / Hamanadeshiko VU	Dichocarpum nipponicum var. sarmentosum / San'inshiroganesou NT
Diphylleia grayi / Sankayou CR+EN	Diplomorpha ganpi / Koganpi VU	Diplomorpha_trichotoma / Kiganpi CR+EN	Dipsacus japonicus / Nabena NT
Dystaenia takesimana / Takeshimashishiudo CR+EN	Echinops setifer / Higotai CR+EN	Eleocharis equisetiformis / Sujinumaharii CR+EN	Epigaea asiatica / Iwanashi
Epipactis thunbergii / Kakiran VU	Eriophorum gracile / Sagisuge CR+EN	Erythronium japonicum / Katakuri VU	Euphorbia jolkinii / Iwataigeki NT
Euryale ferox / Onibasu CR+EN	Fritillaria amabilis / Hosobanakobaimo CR+EN	Fritillaria ayakoana / Izumokobaimo CR+EN	Geranium yoshinoi / Bicchuufuuro VU
Goodyera macrantha / Benishusuran VU	Hemerocallis vespertina / Yuusuge CR+EN	Hepatica nobilis var. japonica / Misumisou CR+EN	Heteropappus hispidus var. arenarius / Hamabenogiku NT
Hibiscus hamabo / Hamabou CR+EN	Hieracium umbellatum / Yanagitanpopo CR+EN	Hololeion krameri / Suiran CR+EN	Hylotelephium viride / Aobenkei VU
Hypericum asahinae / Daisen'otogiri CR+EN	Hypericum ascyron / Tomoesou VU	Hypoxis aurea / Kokinbaizasa VU	Iris gracilipes / Himeshaga VU